CN102299847B - Method, apparatus and system for switching of multicast distribution trees, source equipment and objective equipment - Google Patents
Method, apparatus and system for switching of multicast distribution trees, source equipment and objective equipment Download PDFInfo
- Publication number
- CN102299847B CN102299847B CN201110240517.4A CN201110240517A CN102299847B CN 102299847 B CN102299847 B CN 102299847B CN 201110240517 A CN201110240517 A CN 201110240517A CN 102299847 B CN102299847 B CN 102299847B
- Authority
- CN
- China
- Prior art keywords
- private network
- address
- multicast
- backup
- traffic stream
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Landscapes
- Data Exchanges In Wide-Area Networks (AREA)
Abstract
The embodiment of the invention provides a method, an apparatus and a system for switching of multicast distribution trees, source equipment and objective equipment. The switching method comprises the following steps that: source equipment obtains a backup-group of a first virtual private network (VPN) and a backup-id of the first VPN, wherein the first VPN is connected with the source equipment; the source equipment sends an address notification message to objective equipment through a default multicast distribution tree (Default-MDT) of the first VPN and the address notification message carries the backup-group of the first VPN and the backup-id of the first VP, so that backup equipment in the objective equipment is added into a backup-MDT that is corresponded to the backup-group of the first VPN, wherein the backup equipment is corresponded to the backup-id of the first VP; and when it is detected that there is a fault on a forwarding path on a data-multicast distribution tree (Data-MDT) of the first VPN, the source equipment switches a VPN multicast data flow from the Data-MDT to a backup-MDT and then carries out sending, so that rapid switching of the multicast data flow is realized.
Description
Technical field
The embodiment of the present invention relates to communication technical field, relates in particular to a kind of multicast distribution tree changing method, device, system, source device and object equipment.
Background technology
Multiprotocol label switching (Multi-Protocol Label Switching; Hereinafter to be referred as: MPLS)/Internet protocol (Internet Protocol; Hereinafter to be referred as: IP) main Border Gateway Protocol (the Border Gateway Protocol that uses in network; Hereinafter to be referred as: the method for BGP)/MPLS is set up Virtual Private Network (Virtual Private Network; Hereinafter to be referred as: VPN), i.e. BGP/MPLS VPN.In BGP/MPLS vpn environment, realize the multicast message transmission between VPN network (being private network), existing comparatively widely used is multicast domain (Multicast Domain; Hereinafter to be referred as: MD) scheme.
The main process of MD scheme is as follows: each VPN network that carries out multicast message transmission is called multicasting VPN (Multicast VPN; Hereinafter to be referred as: MVPN), in service provider's network (hereinafter to be referred as P network, i.e. public network), dispose Protocol Independent Multicast (Protocol Independent Multicast; Hereinafter to be referred as: PIM) Routing Protocol, and for each MVPN distributes unique multicast address in a P network, be called acquiescence multicast group (Default-Group).Provider Edge (the Provider Edge being connected with MVPN in P network; Hereinafter to be referred as: PE) equipment, set up the public network of Default-Group for MVPN and give tacit consent to multicast distribution tree (Default Multicast Distribution Tree; Hereinafter to be referred as: Default-MDT).In the time having private network multicast message to pass through P network from a PE device transmission to another PE equipment in MVPN, the private network multicast message in MVPN is packaged into the public network multicast message that destination address is Default-Group by transmitting terminal PE equipment, and at Default-MDT repeating.The public network multicast message receiving is carried out decapsulation by receiving terminal PE equipment, and then be forwarded in the private network of receiving terminal PE equipment connection.
Because all PE equipment that are connected with MVPN all can add the Default-MDT that MVPN is corresponding, destination address after encapsulation is that the public network multicast message of Default-Group can be forwarded to all PE equipment in MVPN, even if the private network that the PE equipment of receiving terminal connects is the reception demand of this private network multicast message not, also can receive the public network multicast message that the destination address after encapsulation is Default-Group, find in private network not the reception demand of this private network multicast message after decapsulation time, again this private network multicast message is abandoned, cause so unnecessary bandwidth waste.In order to address this problem, in MD scheme, add data multicast distribution tree (Data-Multicast Distribution Tree; Hereinafter to be referred as: Data-MDT), the group address of distributing a public network for the multicast traffic stream of every private network, be designated as data multicast group (Data-Group), and by the information of the group address (Data-Group) of the group address (C-Group) of the source address of this private network multicast traffic stream (C-Source), private network data flow, public network, be called multicast distribution tree and add (Multicast Distribution Tree join; Hereinafter to be referred as: MDT-join) information exchange is crossed Default-MDT and is noticed to all PE equipment in MVPN.Receive the PE equipment of this notice message, if the private network of PE equipment connection exists the reception demand of the private network multicast traffic stream to (C-Source, C-Group) mark, can add the Data-MDT that Data-Group is corresponding.The PE so only with reception demand can receive private network multicast message, has avoided the waste of bandwidth.
As mentioned above, for the PE equipment that receives MDT-join information, only have in the time that the private network of this PE equipment connection exists the reception demand of the private network multicast traffic stream to (C-Source, C-Group) mark, just can add the Data-MDT that Data-Group is corresponding.Fig. 1 is the schematic diagram of prior art MVPN transmitting multicast data, in the time there is redundant link in public network, at a time point, multicast receivers only can be preferably wherein a PE (PE2 or PE3) carry out multicast and add, here suppose that the preferred PE2 of multicast receivers carries out multicast and adds, only there is the private network of PE2 to exist (C-Source, C-Group) the reception demand of the private network multicast traffic stream of mark, therefore the forward-path of above-mentioned multicast traffic stream is: multicast source---> PE1---> PE2---> multicast receivers, as shown in Figure 1.If now above-mentioned forward-path breaks down, multicast traffic stream there will be cutout, specific as follows:
1) if above-mentioned forward-path breaks down, after unicast routing protocol has been restrained, multicast receivers can be selected PE3 to carry out multicast to add, if the private network (S now on PE1, G) list item is aging, the private network that PE3 identifies this PE3 connection exists after the reception demand of the private network multicast traffic stream to (C-Source, C-Group) mark, to private network convergent point (Rendezvous Point; Hereinafter to be referred as: RP) initiate to add, after treating that private network multicast transmit tree is set up, multicast traffic stream recovers to forward;
2) if above-mentioned forward-path breaks down, after unicast routing protocol has been restrained, multicast receivers can be selected PE3 to carry out multicast to add, if the private network (S now on PE1, G) list item is also unaged, the private network that PE3 identifies this PE3 connection exists after the reception demand of the private network multicast traffic stream to (C-Source, C-Group) mark, initiate to add to private network RP, and add the Data-MDT that Data-Group is corresponding, after the multicast transmit tree for the treatment of private network and public network is all set up, data stream recovery forwards.
Can find out from above 2, in the environment of multicasting VPN, exist active-standby path long problem switching time at present, the time that active and standby multicast distribution tree switches, depend on the time that clean culture convergence and private network, public network multicast transmit tree are set up again, be approximately 5 seconds～10 seconds.Secondly, the equipment of public network part is more, and switching time is longer (public network group wants hop-by-hop to add) also, the special service application for hypersensitivities such as video request programs, in user's use procedure, there will be the problems such as flower screen, disconnected frame and video card, bring great inconvenience to user.
Summary of the invention
The embodiment of the present invention provides a kind of multicast distribution tree changing method, device, system, source device and object equipment, to realize the quick switching of multicast traffic stream.
The embodiment of the present invention provides a kind of multicast distribution tree changing method, comprising:
Source device obtains the backup multicast group address of the first private network and the alternate device of described the first private network mark that described source device connects;
Described source device sends address notification message by the public network acquiescence multicast distribution tree of described the first private network to object equipment, described address notification message carries the backup multicast group address of described the first private network and the alternate device of described the first private network mark, adds to identify corresponding alternate device with the alternate device of described the first private network in described object equipment the backup multicast distribution tree that the backup multicast group address of described the first private network is corresponding;
After forward-path on the data multicast distribution tree that described the first private network detected breaks down, described source device is switched to described backup multicast distribution tree by the private network multicast traffic stream of described the first private network from described data multicast distribution tree and sends.
The embodiment of the present invention also provides a kind of multicast distribution tree changing method, comprising:
The address notification message that object equipment reception sources equipment sends, described address notification message carries the backup multicast group address of the first private network and the alternate device of described the first private network mark that described source device connects;
When described object equipment does not exist the reception demand of the private network multicast traffic stream that described address notification message is noticed, and described object equipment identifies when identical for the source address of setting up Border Gateway Protocol adjacency and the alternate device of described the first private network, described object equipment adds the backup multicast distribution tree that the backup multicast group address of described the first private network is corresponding, so that after described source device detects that forward-path on the data multicast distribution tree of described the first private network breaks down, receive described source device by the private network multicast traffic stream of described first private network of described backup multicast distribution tree transmission.
The embodiment of the present invention also provides a kind of multicast distribution tree switching device shifter, is arranged in source device, comprising:
Obtain module, the backup multicast group address of the first private network and the alternate device of described the first private network mark that connect for obtaining described source device;
Sending module, send address notification message for the public network acquiescence multicast distribution tree by described the first private network to object equipment, described address notification message carries the backup multicast group address of described the first private network and the alternate device of described the first private network mark, adds to identify corresponding alternate device with the alternate device of described the first private network in described object equipment the backup multicast distribution tree that the backup multicast group address of described the first private network is corresponding;
Whether detection module, break down for detection of the forward-path on the data multicast distribution tree of described the first private network;
Handover module, after detecting that at described detection module forward-path on the data multicast distribution tree of described the first private network breaks down, the private network multicast traffic stream of described the first private network is switched to described backup multicast distribution tree from described data multicast distribution tree and sends.
The embodiment of the present invention also provides a source device, comprises multicast distribution tree switching device shifter as above.
The embodiment of the present invention also provides a kind of multicast distribution tree switching device shifter, is arranged in object equipment, comprising:
Message receiver module, the address notification message sending for reception sources equipment, described address notification message carries the backup multicast group address of the first private network and the alternate device of described the first private network mark that described source device connects;
Add module, for there is not the reception demand of the private network multicast traffic stream that described address notification message is noticed when described object equipment, and described object equipment identifies when identical for the source address of setting up Border Gateway Protocol adjacency and the alternate device of described the first private network, add the backup multicast distribution tree corresponding to backup multicast group address of described the first private network;
Data flow receiver module, after detecting that at described source device forward-path on the data multicast distribution tree of described the first private network breaks down, receive described source device by the private network multicast traffic stream of described first private network of described backup multicast distribution tree transmission.
The embodiment of the present invention also provides a kind of object equipment, comprises multicast distribution tree switching device shifter as above.
The embodiment of the present invention also provides a kind of multicast distribution tree switched system, comprises source device as above and at least two object equipment as above.
Pass through the embodiment of the present invention, the public network acquiescence multicast distribution tree of the first private network that source device connects by this source device sends address notification message to object equipment, this address notification message carries the backup multicast group address of the first private network and the alternate device of the first private network mark, adds to identify corresponding alternate device with the alternate device of above-mentioned the first private network in object equipment the backup multicast distribution tree that the backup multicast group address of above-mentioned the first private network is corresponding; After forward-path on the data multicast distribution tree that the first private network detected breaks down, source device is switched to backup multicast distribution tree by the private network multicast traffic stream of the first private network from data multicast distribution tree and sends, thereby can realize the quick switching of multicast traffic stream.
Brief description of the drawings
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, to the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described below, apparently, accompanying drawing in the following describes is some embodiments of the present invention, for those of ordinary skill in the art, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is the schematic diagram of prior art MVPN transmitting multicast data;
Fig. 2 is the flow chart of an embodiment of multicast distribution tree changing method of the present invention;
Fig. 3 is the flow chart of another embodiment of multicast distribution tree changing method of the present invention;
Fig. 4 is the schematic diagram of an embodiment of MDT-join message of the present invention;
Fig. 5 is the schematic diagram of an embodiment of multicast distribution tree handoff procedure of the present invention;
Fig. 6 is the flow chart of another embodiment of multicast distribution tree changing method of the present invention;
Fig. 7 is the flow chart of another embodiment of multicast distribution tree changing method of the present invention;
Fig. 8 is the schematic diagram of an embodiment of multicast distribution tree changing method of the present invention;
Fig. 9 is the structural representation of an embodiment of multicast distribution tree switching device shifter of the present invention;
Figure 10 is the structural representation of another embodiment of multicast distribution tree switching device shifter of the present invention;
Figure 11 is the structural representation of another embodiment of multicast distribution tree switching device shifter of the present invention.
Embodiment
For making object, technical scheme and the advantage of the embodiment of the present invention clearer, below in conjunction with the accompanying drawing in the embodiment of the present invention, technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is the present invention's part embodiment, instead of whole embodiment.Based on the embodiment in the present invention, the every other embodiment that those of ordinary skill in the art obtain under the prerequisite of not making creative work, belongs to the scope of protection of the invention.
Fig. 2 is the flow chart of an embodiment of multicast distribution tree changing method of the present invention, and as shown in Figure 2, this multicast distribution tree changing method can comprise:
Particularly, the backup address pond that source device can configure from self, obtain the backup multicast group address of the first private network of this source device connection, and obtain the alternate device mark of the first private network self configuring; Or, the backup address pond that source device can configure from self, obtain the backup multicast group address of the first private network of this source device connection, and obtain the alternate device mark of above-mentioned first private network of the alternate device notice of the first private network of above-mentioned source device connection.
Further, source device is given tacit consent to multicast distribution tree after object equipment sends address notification message by the public network of the first private network, and source device can also send to object equipment by the data multicast distribution tree of above-mentioned the first private network by the private network multicast traffic stream of the first private network.
Particularly, source device can send the script of the first private network private network multicast data message by described data multicast distribution tree is encapsulated as the public network multicast data message that destination address is above-mentioned backup multicast group address, sends to object equipment by above-mentioned backup multicast distribution tree.
In the present embodiment, above-mentioned source device can be source PE equipment, and object equipment can be object PE equipment, but the embodiment of the present invention is not limited in this, and the embodiment of the present invention is not construed as limiting the specific implementation form of source device and object equipment.
In above-described embodiment, the public network acquiescence multicast distribution tree of the first private network that source device connects by this source device sends address notification message to object equipment, this address notification message carries the backup multicast group address of the first private network and the alternate device of the first private network mark, adds to identify corresponding alternate device with the alternate device of above-mentioned the first private network in object equipment the backup multicast distribution tree that the backup multicast group address of above-mentioned the first private network is corresponding; After forward-path on the data multicast distribution tree that the first private network detected breaks down, source device is switched to backup multicast distribution tree by the private network multicast traffic stream of the first private network from data multicast distribution tree and sends, thereby can realize the quick switching of multicast traffic stream.
Fig. 3 is the flow chart of another embodiment of multicast distribution tree changing method of the present invention, and as shown in Figure 3, this multicast distribution tree changing method can comprise:
In the present embodiment, in the time that object equipment exists the reception demand of private network multicast traffic stream that address above mentioned notification packet is noticed, object equipment adds the data multicast distribution tree corresponding to data multicast group address of the first private network that address above mentioned notification packet carries.
In the present embodiment, address above mentioned notification packet can also carry the source address of the private network multicast traffic stream of the first private network, the group address of private network multicast traffic stream and the data multicast group address of the first private network of the first private network, when above-mentioned purpose equipment does not exist the reception demand of private network multicast traffic stream that address notification packet is noticed, and above-mentioned purpose equipment identifies when not identical for setting up the source address of Border Gateway Protocol adjacency and the alternate device of above-mentioned the first private network, or in the time there is the reception demand of the private network multicast traffic stream that address notification packet is noticed in above-mentioned purpose equipment, the source address of the private network multicast traffic stream of the first private network that the above-mentioned source device that object equipment records address notification message carries connects, the group address of the private network multicast traffic stream of the first private network and the data multicast group address of the first private network, or, when object equipment does not exist the reception demand of private network multicast traffic stream that address notification packet is noticed, and object equipment identifies when identical for the source address of setting up Border Gateway Protocol adjacency and the alternate device of the first private network, the backup multicast group address of the first private network that the above-mentioned source device that object equipment records address notification message carries connects and the alternate device of the first private network mark, and the group address of private network multicast traffic stream and the data multicast group address of above-mentioned the first private network of the source address of the private network multicast traffic stream of above-mentioned the first private network, above-mentioned the first private network.
Particularly, object equipment can first judge the above-mentioned recording of information that whether exists address notification message to carry in this object equipment, if existed, refreshes the timer of above-mentioned record; If the above-mentioned recording of information that does not exist address notification message to carry in this object equipment, the above-mentioned information that this object equipment records address notification message carries.
In the present embodiment, the private network multicast traffic stream that address notification message is noticed refers to the private network multicast traffic stream by the source address of private network multicast traffic stream of the first private network carrying in address notification message and the group address of the private network multicast traffic stream of the first private network mark.
In the present embodiment, above-mentioned source device can be source PE equipment, and object equipment can be object PE equipment, but the embodiment of the present invention is not limited in this, and the embodiment of the present invention is not construed as limiting the specific implementation form of source device and object equipment.
In above-described embodiment, after object equipment receives the address notification message of source device transmission, when above-mentioned purpose equipment does not exist the reception demand of private network multicast traffic stream that address above mentioned notification packet is noticed, and above-mentioned purpose equipment identifies when identical for the source address of setting up Border Gateway Protocol adjacency and the alternate device of above-mentioned the first private network, object equipment adds the backup multicast distribution tree that the backup multicast group address of the first private network is corresponding, thereby can be after source device detects that forward-path on the data multicast distribution tree of the first private network breaks down, the private network multicast traffic stream of the first private network that reception sources equipment sends by above-mentioned backup multicast distribution tree, to realize the quick switching of multicast traffic stream.
Fig. 2 of the present invention and embodiment illustrated in fig. 3 in address notification message can be MDT-join message, but the embodiment of the present invention is not limited in this, address above mentioned notification packet can also be for being similar to the message of MDT-join message, and the embodiment of the present invention is not construed as limiting the specific implementation of address notification packet.But in the description of following examples of the present invention, taking address notification message as MDT-join message, source device is source PE equipment, object equipment is that object PE equipment is that example describes; And (the Multiprotocol BGP taking Border Gateway Protocol as MP-BGP; Hereinafter to be referred as: MP-BGP) for example describes.
The multicast distribution tree changing method that the embodiment of the present invention proposes, can be applied in MVPN environment, in MVPN environment, except default-MDT and data-MDT, newly-increased backup multicast distribution tree (backup-MDT), and by the mark of backup multicast group address and backup PE equipment, leave in MDT-join message and send, compare existing MDT_join message, MDT-join message in the embodiment of the present invention, increased newly backup multicast group address (backup-group) and backup PE mark (backup identifier; Hereinafter to be referred as: backup-id) two fields, as shown in Figure 4, Fig. 4 is the schematic diagram of an embodiment of MDT-join message of the present invention.
Receive the PE equipment of this MDT-join message, there is the multicast requirement of the private network multicast traffic stream that MDT-join message is noticed in the private network self connecting if inquire, join data-MDT corresponding to Data-group carrying with MDT-join message, there is not if inquire the private network self connecting the multicast requirement of private network multicast traffic stream that MDT-join message is noticed, this locality is used for setting up the source address of MP-BGP adjacency, compare with the value of the backup-id field in MDT-join message, if identical, add the backup-MDT that backup-group is corresponding, source PE equipment detects the forward-path on Data-MDT in real time, once the fault of detecting, by the private network multicast data message originally sending by Data-MDT, being encapsulated as destination address is the public network multicast data message of backup-group, send by backup-MDT, realize the quick switching of public network multicast path, as shown in Figure 5, Fig. 5 is the schematic diagram of an embodiment of multicast distribution tree handoff procedure of the present invention.
In Fig. 5, PE1 is source PE equipment, and PE2 and PE3 are object PE equipment, and PE3 for setting up the source address of MP-BGP adjacency, identical with the value of the backup-id field in MDT-join message, PE3 is backup PE equipment.
Fig. 6 is the flow chart of another embodiment of multicast distribution tree changing method of the present invention, and as shown in Figure 6, this multicast distribution tree changing method can comprise:
Particularly, the backup address pond that source PE equipment can configure from self, obtain the backup-group of an above-mentioned VPN, and obtain the backup-id of a VPN who self configures; Or, the backup address pond that source PE equipment can configure from self, obtain the backup-group of an above-mentioned VPN, and obtain the backup-id of a VPN of the alternate device notice of an above-mentioned VPN.
Particularly, the private network multicast data message originally sending by Data-MDT is encapsulated as the public network multicast data message that destination address is backup-group by source PE equipment, sends to object PE equipment by above-mentioned backup-MDT.
In the present embodiment, source PE equipment can have multiple to the detection mode of the forward-path on Data-MDT, for example: source PE equipment can regularly send ICMP request (Internet Control Message Protocol Request by Data-MDT; Hereinafter to be referred as: ICMP Request) message is to object PE equipment, for example, if source PE equipment receives the response of object PE equipment to ICMP Request message within the scheduled time (: 1 second), PE equipment in source can determine that the forward-path on Data-MDT does not break down; For example, if source PE equipment does not receive the response of object PE equipment to ICMP Request message within the scheduled time (: 1 second), PE equipment in source can determine that the forward-path on Data-MDT breaks down.Below be only a kind of example of the detection mode of source PE equipment to the forward-path on Data-MDT, the embodiment of the present invention is not limited in this, the embodiment of the present invention is not construed as limiting the detection mode of the forward-path on Data-MDT source PE equipment, as long as whether the forward-path that source PE equipment can detect on Data-MDT breaks down.
In above-described embodiment, source PE equipment is after detecting that forward-path on Data-MDT breaks down, the private network multicast traffic stream originally sending by Data-MDT is switched to backup-MDT to be sent, thereby can realize the quick switching of multicast traffic stream, and due to the present embodiment only with the source PE equipment of public network and backup PE device-dependent, with P equipment, private network device and network design device independent, therefore dispose flexibility high, implement simple.
Fig. 7 is the flow chart of another embodiment of multicast distribution tree changing method of the present invention, and as shown in Figure 7, this multicast distribution tree changing method can comprise:
Step 701, the MDT that object PE equipment reception sources PE equipment sends adds (MDT-join) message.
Step 702, object PE equipment judges whether the private network of this object PE equipment connection exists the reception demand of the private network multicast traffic stream that MDT-join message is noticed.If exist, perform step 703; If the private network of this object PE equipment connection does not exist the reception demand of the private network multicast traffic stream that MDT-join message is noticed, perform step 704.
In the present embodiment, the private network multicast traffic stream that MDT-join message is noticed is C-Source that MDT-join message carries and the private network multicast traffic stream of C-group mark.
Step 703, object PE equipment adds data multicast distribution tree (Data-MDT) corresponding to data multicast group address (Data-group) of the VPN that MDT-join message carries, then performs step 706.
Step 704, whether object PE equipment judges local identical with the value of MDT-join message backup-id field for setting up the source address of MP-BGP adjacency.If identical, perform step 705; If local not identical with the value of MDT-join message backup-id field for setting up the source address of MP-BGP adjacency, perform step 706.
Step 705, object PE equipment adds backup multicast distribution tree (backup-MDT) corresponding to backup multicast group address (backup-group) of the VPN that MDT-join message carries, then performs step 706.
Step 706, object PE equipment judges the local recording of information that whether exists MDT-join message to carry, if existed, performs step 707; If object PE equipment is determined the local recording of information that does not exist MDT-join message to carry, perform step 708.
Particularly, object PE equipment can judge whether this locality exists the list item that records the entrained information of MDT-join message, if had, object PE equipment can be determined the recording of information that this locality exists MDT-join message to carry; If the definite this locality of object PE equipment does not exist the list item that records the entrained information of MDT-join message, object PE equipment can be determined the recording of information that does not exist MDT-join message to carry.
Step 707, object PE equipment refreshes the timer of above-mentioned record.
Particularly, object equipment can refresh the timer of the list item that records the entrained information of MDT-join message.
Step 708, the information that object PE equipment records MDT-join message carries.
Particularly, object PE equipment can create the list item corresponding with this MDT-join message, and C-source, C-group and Data-group that this MDT-join message is carried are recorded in this list item.
It should be noted that, step 705, after object PE equipment adds the backup multicast distribution tree backup-MDT that the backup-group of the VPN that MDT-join message carries is corresponding, object PE equipment, except recording C-source, the C-group and Data-group that MDT-join message carries, also needs to record backup-group and the backup-id that MDT-join message carries.
Above-described embodiment can be realized the quick switching of multicast traffic stream, and due to the present embodiment only with the source PE equipment of public network and backup PE device-dependent, with P equipment, private network device and network design device independent, therefore dispose flexibility high, implement simple.
Below by an instantiation, multicast distribution tree changing method provided by the invention is described, Fig. 8 is the schematic diagram of an embodiment of multicast distribution tree changing method of the present invention, and in Fig. 8, PE1 is source PE equipment, and PE2 and PE3 are object PE equipment; Multicast receivers preferably adds to PE2.
PE1 obtains backup-group and the backup-id (being 3.3.3.3) of the VPN that this PE1 connects here, and the backup-group of a VPN and backup-id is carried in the MDT-join message of a VPN and sends to PE2 and PE3 by Default-MDT.
After PE2 receives MDT-join message, there is the reception demand of the private network multicast traffic stream that above-mentioned MDT-join message is noticed in the private network that inquires PE2 connection, and therefore PE2 adds Data-MDT corresponding to Data-group carrying with above-mentioned MDT-join message.Wherein, the private network multicast traffic stream that MDT-join message is noticed is C-Source that MDT-join message carries and the private network multicast traffic stream of C-group mark.
After PE3 receives MDT-join message, there is not the reception demand of the private network multicast traffic stream that above-mentioned MDT-join message is noticed in the private network that inquiry PE3 connects, so the value 3.3.3.3 of PE3 carries for the address 3.3.3.3 that sets up MP-BGP adjacency this locality backup-id field with MDT-join message mates, determine the two identical after, PE3 adds backup-MDT corresponding to backup-group carrying with MDT-join message.
In the present embodiment, after PE1 sends MDT-join message, the private network multicast traffic stream of the one VPN is sent to multicast receivers by Data-MDT, the forward-path of private network multicast traffic stream is: multicast source---> PE1---> PE2---> multicast receivers, wherein carry out the encapsulation of private network multicast data message at PE1, carry out the decapsulation of private network multicast data message at PE2.PE1 detects the local connectedness to path between multicast packet recipient in real time, once after detecting that forward-path on Data-MDT breaks down, PE1 is by the private network multicast data message originally sending by Data-MDT, being encapsulated as destination address is the public network multicast data message of backup-group, send to PE3 by backup-MDT, the public network multicast data message that is backup-group to destination address by PE3 carries out decapsulation, obtain the private network multicast data message of a VPN, send to multicast receivers, thereby can realize the quick switching of multicast traffic stream.
It should be noted that, in the embodiment of the present invention, when forward-path is switched to after backup path by backup-MDT, after PE equipment to be backed up receives MDT-join message again, need to be according to the handling process of object PE equipment, whether the private network that must first inquire about backup PE equipment connection there is the reception demand of the private network multicast traffic stream that MDT-join message is noticed, if exist, join Data-MDT, now, due to forward-path or on backup-MDT, therefore needing that private network multicast traffic stream is switched to Data-MDT from backup-MDT sends, can save like this expense of source PE equipment.In addition, backup PE equipment adds after Data-MDT, can exit backup-MDT, the expense of saving source PE equipment and backup PE equipment, until the private network of backup PE equipment connection no longer has the reception demand of the private network multicast traffic stream that above-mentioned MDT-join message is noticed, backup PE equipment can add backup-MDT again.
In the embodiment of the present invention, consider the popularity that data-MDT uses, backup-group and backup-id are carried in MDT-join message and send, for the environment that does not have data-MDT, above-mentioned backup-group and backup-id also can be placed in the message that is similar to MDT-join message and send, and can consider to send with clean culture, the embodiment of the present invention is not construed as limiting this.
In the embodiment of the present invention, consider in current market application, still there is the situation of address overlap in different VPN, therefore (multiple private network multicast traffic streams can a corresponding backup-group to consider VPN to use a backup-group, not existing in the environment of address overlap, can consider that all VPN use same backup-group, can save the use of multicast address like this, and reduce the quantity of multicast transmit tree, reduce the expense of equipment.
In the embodiment of the present invention, for backup-id, primary link down hop and the isoparametric identification of backup down hop of backup-group, backup PE equipment, can be designed to automatic discovery, so that network architecture is more flexible, and reduce some unnecessary batch configuration.
One of ordinary skill in the art will appreciate that: all or part of step that realizes said method embodiment can complete by the relevant hardware of program command, aforesaid program can be stored in a computer read/write memory medium, this program, in the time carrying out, is carried out the step that comprises said method embodiment; And aforesaid storage medium comprises: various media that can be program code stored such as ROM, RAM, magnetic disc or CDs.
Fig. 9 is the structural representation of an embodiment of multicast distribution tree switching device shifter of the present invention, and the multicast distribution tree switching device shifter in the present embodiment can be arranged in source device, or realizes Fig. 2 of the present invention and flow process embodiment illustrated in fig. 6 as source device.As shown in Figure 9, this multicast distribution tree switching device shifter can comprise: obtain module 91, sending module 92, detection module 93 and handover module 94.
Particularly, obtain module 91, the backup multicast group address of the first private network and the alternate device of the first private network mark that connect for obtaining source device; Particularly, obtain module 91 and can from the backup address pond of above-mentioned source device configuration, obtain the backup multicast group address of the first private network of this source device connection, and obtain the alternate device mark of the first private network self configuring; Or, from the backup address pond of source device configuration, obtain the backup multicast group address of the first private network that above-mentioned source device connects, and the alternate device that obtains the first private network that source device connects is noticed the alternate device mark of the first private network;
Sending module 92, send address notification message for the Default-MDT by the first private network to object equipment, this address notification message carries the backup multicast group address of the first private network and the alternate device of the first private network mark, adds to identify corresponding alternate device with the alternate device of the first private network in object equipment the backup-MDT that the backup multicast group address of the first private network is corresponding; Further, sending module 92 also, for after sending address notification message, sends to object equipment by the private network multicast traffic stream of the first private network by the Data-MDT of the first private network;
Whether detection module 93, break down for detection of the forward-path on the Data-MDT of the first private network;
In the present embodiment, above-mentioned source device can be source PE equipment, and object equipment can be object PE equipment, but the embodiment of the present invention is not limited in this, and the embodiment of the present invention is not construed as limiting the specific implementation form of source device and object equipment.
In above-described embodiment, the Default-MDT of the first private network that sending module 92 connects by source device sends address notification message to object equipment, this address notification message carries the backup multicast group address of the first private network and the alternate device of the first private network mark, adds to identify corresponding alternate device with the alternate device of above-mentioned the first private network in object equipment the backup multicast distribution tree that the backup multicast group address of above-mentioned the first private network is corresponding; After detection module 93 detects that forward-path on the data multicast distribution tree of the first private network breaks down, handover module 94 is switched to backup multicast distribution tree by the private network multicast traffic stream of the first private network from data multicast distribution tree and sends, thereby can realize the quick switching of multicast traffic stream.
Figure 10 is the structural representation of another embodiment of multicast distribution tree switching device shifter of the present invention, and the multicast distribution tree switching device shifter in the present embodiment can be arranged in object equipment, or as object equipment, realizes Fig. 3 of the present invention and flow process embodiment illustrated in fig. 7.As shown in figure 10, this multicast distribution tree switching device shifter can comprise: message receiver module 1001, add module 1002 and data flow receiver module 1003.
Particularly, message receiver module 1001, the address notification message sending for reception sources equipment, this address notification message carries the backup multicast group address of the first private network and the alternate device of the first private network mark that source device connects;
Add module 1002, for there is not the reception demand of the private network multicast traffic stream that address above mentioned notification packet is noticed when above-mentioned purpose equipment, and object equipment identifies when identical for the source address of setting up Border Gateway Protocol adjacency and the alternate device of the first private network, add the backup multicast distribution tree corresponding to backup multicast group address of the first private network; Further, add module 1002 can also work as object equipment while there is the reception demand of private network multicast traffic stream that address above mentioned notification packet is noticed, add the Data-MDT corresponding to data multicast group address of the first private network that address above mentioned notification packet carries;
Data flow receiver module 1003, after detecting that at source device forward-path on the Data-MDT of the first private network breaks down, the private network multicast traffic stream of the first private network that reception sources equipment sends by backup-MDT.
In the present embodiment, the private network multicast traffic stream that address notification message is noticed refers to the private network multicast traffic stream by the source address of private network multicast traffic stream of the first private network carrying in address notification message and the group address of the private network multicast traffic stream of the first private network mark.
In the present embodiment, above-mentioned source device can be source PE equipment, and object equipment can be object PE equipment, but the embodiment of the present invention is not limited in this, and the embodiment of the present invention is not construed as limiting the specific implementation form of source device and object equipment.
In above-described embodiment, after message receiver module 1001 receives the address notification message of source device transmission, when above-mentioned purpose equipment does not exist the reception demand of private network multicast traffic stream that address above mentioned notification packet is noticed, and above-mentioned purpose equipment identifies when identical for the source address of setting up Border Gateway Protocol adjacency and the alternate device of above-mentioned the first private network, add module 1002 to add the backup multicast distribution tree corresponding to backup multicast group address of the first private network, thereby data flow receiver module 1003 can be after source device detects that forward-path on the data multicast distribution tree of the first private network breaks down, the private network multicast traffic stream of the first private network that reception sources equipment sends by above-mentioned backup multicast distribution tree, to realize the quick switching of multicast traffic stream.
Figure 11 is the structural representation of another embodiment of multicast distribution tree switching device shifter of the present invention, and compared with the multicast distribution tree switching device shifter shown in Figure 10, difference is, the multicast distribution tree switching device shifter shown in Figure 11 can also comprise:
Logging modle 1004, for there is not the reception demand of the private network multicast traffic stream that address above mentioned notification packet is noticed when object equipment, and above-mentioned purpose equipment identifies when not identical for setting up the source address of Border Gateway Protocol adjacency and the alternate device of the first private network, or in the time there is the reception demand of the private network multicast traffic stream that address notification packet is noticed in above-mentioned purpose equipment, the source address of the private network multicast traffic stream of the first private network that the source device that recording address notification packet carries connects, the group address of the private network multicast traffic stream of the first private network and the data multicast group address of the first private network.Particularly, logging modle 1004 can first judge the above-mentioned recording of information that whether exists address notification message to carry in object equipment, if existed, refreshes the timer of above-mentioned record; If the above-mentioned recording of information that does not exist address notification message to carry in object equipment, the above-mentioned information that logging modle 1004 recording address notification packets carry; Or, when object equipment does not exist the reception demand of private network multicast traffic stream that address notification packet is noticed, and object equipment identifies when identical for the source address of setting up Border Gateway Protocol adjacency and the alternate device of the first private network, the backup multicast group address of the first private network that the above-mentioned source device that recording address notification packet carries connects and the alternate device of the first private network mark, and the group address of private network multicast traffic stream and the data multicast group address of above-mentioned the first private network of the source address of the private network multicast traffic stream of above-mentioned the first private network, above-mentioned the first private network.
Above-mentioned multicast distribution tree switching device shifter can be realized the quick switching of multicast traffic stream, and it is high to dispose flexibility, implements simple.
The embodiment of the present invention also provides a source device, this source device can be realized by the multicast distribution tree switching device shifter shown in Fig. 9, this source device can be source PE equipment, but the embodiment of the present invention is not limited in this, and the embodiment of the present invention is not construed as limiting the specific implementation form of source device.
The embodiment of the present invention also provides a kind of object equipment, this object equipment can be realized by the multicast distribution tree switching device shifter shown in Figure 10 of the present invention or Figure 11, this object equipment can be object PE equipment, but the embodiment of the present invention is not limited in this, the embodiment of the present invention is not construed as limiting the specific implementation form of object equipment.
The embodiment of the present invention also provides a kind of multicast distribution tree switched system, and this multicast distribution tree switched system can comprise source device and at least two object equipment, and the structure of above-mentioned multicast distribution tree switched system can be as shown in Fig. 5 or Fig. 8.Wherein, source device can be realized by the multicast distribution tree switching device shifter shown in Fig. 9, and object equipment can be realized by the multicast distribution tree switching device shifter shown in Figure 10 of the present invention or Figure 11.Above-mentioned source device can be source PE equipment, and object equipment can be object PE equipment, but the embodiment of the present invention is not limited in this, and the embodiment of the present invention is not construed as limiting the specific implementation form of source device and object equipment.
It will be appreciated by those skilled in the art that accompanying drawing is the schematic diagram of a preferred embodiment, the module in accompanying drawing or flow process might not be that enforcement the present invention is necessary.
It will be appreciated by those skilled in the art that the module in the device in embodiment can be distributed in the device of embodiment according to embodiment description, also can carry out respective change and be arranged in the one or more devices that are different from the present embodiment.The module of above-described embodiment can be merged into a module, also can further split into multiple submodules.
Finally it should be noted that: above embodiment only, in order to technical scheme of the present invention to be described, is not intended to limit; Although the present invention is had been described in detail with reference to previous embodiment, those of ordinary skill in the art is to be understood that: its technical scheme that still can record aforementioned each embodiment is modified, or part technical characterictic is wherein equal to replacement; And these amendments or replacement do not make the essence of appropriate technical solution depart from the spirit and scope of various embodiments of the present invention technical scheme.
Claims (13)
1. a multicast distribution tree changing method, is characterized in that, comprising:
Source device obtains the backup multicast group address of the first private network and the alternate device of described the first private network mark that described source device connects;
Described source device sends address notification message by the public network acquiescence multicast distribution tree of described the first private network to object equipment, described address notification message carries the backup multicast group address of described the first private network and the alternate device of described the first private network mark, adds to identify corresponding alternate device with the alternate device of described the first private network in described object equipment the backup multicast distribution tree that the backup multicast group address of described the first private network is corresponding;
Described address notification message also carries the source address of the private network multicast traffic stream of the first private network, the group address of private network multicast traffic stream and the data multicast group address of the first private network of the first private network,
There is not the reception demand of the private network multicast traffic stream that described address notification message is noticed with the described object equipment of box lunch, and described object equipment identifies when not identical for setting up the source address of Border Gateway Protocol adjacency and the alternate device of described the first private network, or in the time there is the reception demand of the private network multicast traffic stream that described address notification message is noticed in described object equipment, make the source address of the private network multicast traffic stream of the first private network that address notification message carries described in described object equipment records, the group address of the private network multicast traffic stream of the first private network and the data multicast group address of the first private network, or,
There is not the reception demand of the private network multicast traffic stream that described address notification message is noticed with the described object equipment of box lunch, and described object equipment identifies when identical for the source address of setting up Border Gateway Protocol adjacency and the alternate device of described the first private network, the backup multicast group address of the first private network and the alternate device of described the first private network mark that address notification message carries described in described object equipment records described source device is connected, and the source address of the private network multicast traffic stream of described the first private network, the group address of the private network multicast traffic stream of described the first private network and the data multicast group address of described the first private network,
After forward-path on the data multicast distribution tree that described the first private network detected breaks down, described source device is switched to described backup multicast distribution tree by the private network multicast traffic stream of described the first private network from described data multicast distribution tree and sends.
2. method according to claim 1, is characterized in that, described source device is switched to described backup multicast distribution tree by the private network multicast traffic stream of described the first private network from described data multicast distribution tree and sends and comprise:
Described source device sends the script of described the first private network private network multicast data message by described data multicast distribution tree is encapsulated as the public network multicast data message that destination address is described backup multicast group address, sends to described object equipment by described backup multicast distribution tree.
3. method according to claim 1 and 2, is characterized in that, the backup multicast group address of the first private network and the alternate device of described the first private network mark that described source device obtains described source device connection comprise:
The backup address pond that described source device configures from self, obtain the backup multicast group address of the first private network of described source device connection, and obtain the alternate device mark of described the first private network self configuring; Or,
The backup address pond that described source device configures from self, obtain the backup multicast group address of the first private network of described source device connection, and obtain the alternate device mark of described first private network of the alternate device notice of the first private network of described source device connection.
4. a multicast distribution tree changing method, is characterized in that, comprising:
The address notification message that object equipment reception sources equipment sends, described address notification message carries the backup multicast group address of the first private network and the alternate device of described the first private network mark that described source device connects;
When described object equipment does not exist the reception demand of the private network multicast traffic stream that described address notification message is noticed, and described object equipment identifies when identical for the source address of setting up Border Gateway Protocol adjacency and the alternate device of described the first private network, described object equipment adds the backup multicast distribution tree that the backup multicast group address of described the first private network is corresponding, so that after described source device detects that forward-path on the data multicast distribution tree of described the first private network breaks down, receive described source device by the private network multicast traffic stream of described first private network of described backup multicast distribution tree transmission,
Described address notification message also carries the source address of the private network multicast traffic stream of the first private network, the group address of private network multicast traffic stream and the data multicast group address of the first private network of the first private network;
When described object equipment does not exist the reception demand of the private network multicast traffic stream that described address notification message is noticed, and described object equipment identifies when not identical for setting up the source address of Border Gateway Protocol adjacency and the alternate device of described the first private network, or in the time there is the reception demand of the private network multicast traffic stream that described address notification message is noticed in described object equipment, the source address of the private network multicast traffic stream of the first private network that described in described object equipment records, address notification message carries, the group address of the private network multicast traffic stream of the first private network and the data multicast group address of the first private network, or,
When described object equipment does not exist the reception demand of the private network multicast traffic stream that described address notification message is noticed, and described object equipment identifies when identical for the source address of setting up Border Gateway Protocol adjacency and the alternate device of described the first private network, the backup multicast group address of the first private network that the described source device that described in described object equipment records, address notification message carries connects and the alternate device of described the first private network mark, and the source address of the private network multicast traffic stream of described the first private network, the group address of the private network multicast traffic stream of described the first private network and the data multicast group address of described the first private network.
5. method according to claim 4, is characterized in that,
In the time that described object equipment exists the reception demand of the private network multicast traffic stream that described address notification message is noticed, described object equipment adds the data multicast distribution tree corresponding to data multicast group address of described the first private network that described address notification message carries.
6. a multicast distribution tree switching device shifter, is arranged in source device, it is characterized in that, comprising:
Obtain module, the backup multicast group address of the first private network and the alternate device of described the first private network mark that connect for obtaining described source device;
Sending module, send address notification message for the public network acquiescence multicast distribution tree by described the first private network to object equipment, described address notification message carries the backup multicast group address of described the first private network and the alternate device of described the first private network mark, adds to identify corresponding alternate device with the alternate device of described the first private network in described object equipment the backup multicast distribution tree that the backup multicast group address of described the first private network is corresponding;
Described address notification message also carries the source address of the private network multicast traffic stream of the first private network, the group address of private network multicast traffic stream and the data multicast group address of the first private network of the first private network,
There is not the reception demand of the private network multicast traffic stream that described address notification message is noticed with the described object equipment of box lunch, and described object equipment identifies when not identical for setting up the source address of Border Gateway Protocol adjacency and the alternate device of described the first private network, or in the time there is the reception demand of the private network multicast traffic stream that described address notification message is noticed in described object equipment, make the source address of the private network multicast traffic stream of the first private network that address notification message carries described in described object equipment records, the group address of the private network multicast traffic stream of the first private network and the data multicast group address of the first private network, or,
There is not the reception demand of the private network multicast traffic stream that described address notification message is noticed with the described object equipment of box lunch, and described object equipment identifies when identical for the source address of setting up Border Gateway Protocol adjacency and the alternate device of described the first private network, the backup multicast group address of the first private network and the alternate device of described the first private network mark that address notification message carries described in described object equipment records described source device is connected, and the source address of the private network multicast traffic stream of described the first private network, the group address of the private network multicast traffic stream of described the first private network and the data multicast group address of described the first private network,
Whether detection module, break down for detection of the forward-path on the data multicast distribution tree of described the first private network;
Handover module, after detecting that at described detection module forward-path on the data multicast distribution tree of described the first private network breaks down, the private network multicast traffic stream of described the first private network is switched to described backup multicast distribution tree from described data multicast distribution tree and sends.
7. device according to claim 6, is characterized in that,
Described handover module is encapsulated as specifically for the private network multicast data message that the script of described the first private network is sent by described data multicast distribution tree the public network multicast data message that destination address is described backup multicast group address, sends to described object equipment by described backup multicast distribution tree.
8. according to the device described in claim 6 or 7, it is characterized in that,
Described acquisition module, specifically for obtain the backup multicast group address of the first private network of described source device connection from the backup address pond of described source device configuration, and obtains the alternate device mark of described the first private network self configuring; Or, from the backup address pond of described source device configuration, obtain the backup multicast group address of the first private network of described source device connection, and obtain the alternate device mark of described first private network of the alternate device notice of the first private network of described source device connection.
9. a multicast distribution tree switching device shifter, is arranged in object equipment, it is characterized in that, comprising:
Message receiver module, the address notification message sending for reception sources equipment, described address notification message carries the backup multicast group address of the first private network and the alternate device of described the first private network mark that described source device connects;
Add module, for there is not the reception demand of the private network multicast traffic stream that described address notification message is noticed when described object equipment, and described object equipment identifies when identical for the source address of setting up Border Gateway Protocol adjacency and the alternate device of described the first private network, add the backup multicast distribution tree corresponding to backup multicast group address of described the first private network;
Logging modle, for there is not the reception demand of the private network multicast traffic stream that described address notification message is noticed when described object equipment, and described object equipment identifies when not identical for setting up the source address of Border Gateway Protocol adjacency and the alternate device of described the first private network, or in the time there is the reception demand of the private network multicast traffic stream that described address notification message is noticed in described object equipment, record the source address of the private network multicast traffic stream of the first private network that described address notification message carries, the group address of the private network multicast traffic stream of the first private network and the data multicast group address of the first private network, or, when described object equipment does not exist the reception demand of the private network multicast traffic stream that described address notification message is noticed, and described object equipment identifies when identical for the source address of setting up Border Gateway Protocol adjacency and the alternate device of described the first private network, record the backup multicast group address of the first private network and the alternate device of described the first private network mark that described source device that described address notification message carries connects, and the source address of the private network multicast traffic stream of described the first private network, the group address of the private network multicast traffic stream of described the first private network and the data multicast group address of described the first private network,
Data flow receiver module, after detecting that at described source device forward-path on the data multicast distribution tree of described the first private network breaks down, receive described source device by the private network multicast traffic stream of described first private network of described backup multicast distribution tree transmission.
10. device according to claim 9, is characterized in that,
The described module that adds, also in the time that described object equipment exists the reception demand of the private network multicast traffic stream that described address notification message is noticed, add the data multicast distribution tree corresponding to data multicast group address of described the first private network that described address notification message carries.
11. 1 source device, is characterized in that, comprise the multicast distribution tree switching device shifter as described in claim 6-8 any one.
12. 1 kinds of object equipment, is characterized in that, comprise the multicast distribution tree switching device shifter as described in claim 9-10 any one.
13. 1 kinds of multicast distribution tree switched systems, is characterized in that, comprise source device as claimed in claim 11 and at least two object equipment as claimed in claim 12.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110240517.4A CN102299847B (en) | 2011-08-19 | 2011-08-19 | Method, apparatus and system for switching of multicast distribution trees, source equipment and objective equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110240517.4A CN102299847B (en) | 2011-08-19 | 2011-08-19 | Method, apparatus and system for switching of multicast distribution trees, source equipment and objective equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102299847A CN102299847A (en) | 2011-12-28 |
| CN102299847B true CN102299847B (en) | 2014-06-04 |
Family
ID=45360034
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110240517.4A Expired - Fee Related CN102299847B (en) | 2011-08-19 | 2011-08-19 | Method, apparatus and system for switching of multicast distribution trees, source equipment and objective equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102299847B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110740086B (en) * | 2018-07-18 | 2021-09-03 | 中国电信股份有限公司 | Data multicast distribution tree switching method, system and device |
| CN109218107A (en) * | 2018-10-15 | 2019-01-15 | 迈普通信技术股份有限公司 | Link switch-over method, device, the network equipment and network system |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101035057A (en) * | 2007-03-30 | 2007-09-12 | 华为技术有限公司 | Method for establishing the multicast share tree and data transfer method and communication network |
| CN101247252A (en) * | 2008-03-10 | 2008-08-20 | 华为技术有限公司 | Method, device and system for multicast fast heavy-route |
| CN101335695A (en) * | 2007-06-27 | 2008-12-31 | 华为技术有限公司 | Head node protection method, apparatus and device for point-to-multipoint label switching path |
| CN101645790A (en) * | 2009-08-10 | 2010-02-10 | 杭州华三通信技术有限公司 | Switching-over method, device and system of multicast distribution tree |
| CN101656679A (en) * | 2009-09-25 | 2010-02-24 | 华为技术有限公司 | Method for rapidly converging multicast, router and communication system |
| CN101827025A (en) * | 2010-04-02 | 2010-09-08 | 华为技术有限公司 | Communication network multicast protection method, system and device |
| CN102130788A (en) * | 2011-03-14 | 2011-07-20 | 华为技术有限公司 | Method, device and system for configuring monitoring terminal |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090252033A1 (en) * | 2008-04-08 | 2009-10-08 | At&T Knowledge Ventures, L.P. | System and method of distributing media content |
-
2011
- 2011-08-19 CN CN201110240517.4A patent/CN102299847B/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101035057A (en) * | 2007-03-30 | 2007-09-12 | 华为技术有限公司 | Method for establishing the multicast share tree and data transfer method and communication network |
| CN101335695A (en) * | 2007-06-27 | 2008-12-31 | 华为技术有限公司 | Head node protection method, apparatus and device for point-to-multipoint label switching path |
| CN101247252A (en) * | 2008-03-10 | 2008-08-20 | 华为技术有限公司 | Method, device and system for multicast fast heavy-route |
| CN101645790A (en) * | 2009-08-10 | 2010-02-10 | 杭州华三通信技术有限公司 | Switching-over method, device and system of multicast distribution tree |
| CN101656679A (en) * | 2009-09-25 | 2010-02-24 | 华为技术有限公司 | Method for rapidly converging multicast, router and communication system |
| CN101827025A (en) * | 2010-04-02 | 2010-09-08 | 华为技术有限公司 | Communication network multicast protection method, system and device |
| CN102130788A (en) * | 2011-03-14 | 2011-07-20 | 华为技术有限公司 | Method, device and system for configuring monitoring terminal |
Non-Patent Citations (2)
| Title |
|---|
| 《基于MPLS的IP组播流量工程》;袁崇斌;《广西广播电视大学学报》;20101231;第21卷(第4期);全文 * |
| 袁崇斌.《基于MPLS的IP组播流量工程》.《广西广播电视大学学报》.2010,第21卷(第4期),全文. |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102299847A (en) | 2011-12-28 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US10243841B2 (en) | Multicast fast reroute at access devices with controller implemented multicast control plane | |
| US9602435B2 (en) | Packet broadcast mechanism in a split architecture network | |
| US7835378B2 (en) | Root node redundancy for multipoint-to-multipoint transport trees | |
| US9197583B2 (en) | Signaling of attachment circuit status and automatic discovery of inter-chassis communication peers | |
| US7573888B2 (en) | Multicast routing over unidirectional links | |
| US8934486B2 (en) | System and method for implementing multicast over a label-switched core network | |
| US8537816B2 (en) | Multicast VPN support for IP-VPN lite | |
| US8488616B2 (en) | Building multipoint-to-multipoint label switch paths | |
| CN101189837B (en) | Packet ring network system, packet transfer method, and node | |
| JP5441908B2 (en) | Multipoint and root multipoint protection switching | |
| CN102148745B (en) | Method and system for increasing forwarding efficiency of virtual private LAN service network | |
| US9838303B2 (en) | PIM source discovery by last hop router | |
| CN109150730A (en) | The cross-domain method, apparatus of multicast, system and computer readable storage medium | |
| EP2098021A1 (en) | Method of providing data | |
| CN105812259A (en) | Packet forwarding method and device | |
| CN104253736A (en) | PE (provider edge) equipment and method for notifying same of information | |
| CN102694718A (en) | Virtual private LAN service (VPLS) rapid rerouting method and equipment thereof | |
| CN105337746B (en) | A kind of transmission method and device of multicast packet | |
| CN102299847B (en) | Method, apparatus and system for switching of multicast distribution trees, source equipment and objective equipment | |
| CN101808043A (en) | Method and device for detecting service message forwarding state of TRUNK members | |
| CN101621467A (en) | Method, devicedevice and system for realizing multicast VSI | |
| CN102195863B (en) | Multicasting realization method, access layer equipment and system under ring network framework | |
| US9548887B2 (en) | Proactive creation of multicast state in an overlay transport network to achieve fast convergence on failover | |
| CN103825794B (en) | Transparent interconnection of lots of links internet data frame sending method and device | |
| CN103546376A (en) | Response message transmission method and node |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140604 Termination date: 20210819 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |